Gauge



April 18', 1950 on- 2,504,886

GAUGE Filed May 21, 1945 v v 2 Sheets-Sheet l lNVENTOR [$60 A 660/7 ATTORN EY5 April 18, 1950 E. scoTT 2,504,886

GAUGE Filed May 21, 1945 2 Sheets-Sheet 2 INVENTOR 5/ ATTORN E15 impr ved strust-inter the pr cr edi iorm of; which;

Patented Apr. 18, 1950 STATES. PATENT OFFICE.

I 735M386; I

shunn-v Eh'cnlt.Scott,"ltiissiongsliansr 1 ApplicationbMay-z zl, 194s3 Serlal'No. 594;959-P ,fi Claims, (cuss-n14 This invention re'lates totsaugess particularlyfor la in out-or measuring-locations oi points or lines rela ive: to-lcenter. locations and-.ha's- .for its principalobiect. to-proyide ragaugetoi this; eharaiie tergwhich isr'eadil-y manipulated: for obtaining accurate layout and/or inspection of a workpiece, for example, a die, toolqholding blocks, and. like workpieces where-extreme accuracyisessential.

Qther :objects: of the; invention are tozprovidear work: laim t.- or meas ingau 0f.- simplecon- .struction; tomrovide agaugetfor -lo atins p ints or lines relative to the centerlof a borehole in-a workpiece; to: provide, azlayout gaugerwith a :micrometer adiustmentrfor the measuringmeans; to provide. a gauge: adjustable-for, layouts on planes at an an le relative; to the axis of a bore, hole Iromwhich; measurements are toshc emade; and provide a gauge with straight edges formsdioating points and guidingascribe lineson aworkpiece, which traightedees, are loosely positioned to,-, the -.neares t unit of, measureqand then, finally adiustedby means of amicromet r sealer n c omplishine these, and other ebiectsoi the. invention her afterpointed 0111711. have provided? is; illustrated in the accompanying drawingwhereinr.

Fig; V1 is a perspective viewer a layout and measuring; gauge constructed in accordance with the present iHVBHtiQH-r t F 2c, :is ai ont view of the. :eaugewith: parts: broken away tobetter illustrate the-construction thflf Fig, Sis an enlarged section; throughg'thefcentere ns pin andaits adjustable support oat-he: line,- i

detaihto-rtheedrawingsz;'

I designates a center gauge including az hasek having -a-nlanez itopzsurface:3 aunonnvhieirarworkr easu-rementilayoutsara centersore-st butwisxshpwmas rectan ular.inriormi-andrn .lsizbr: workpiece andmaintainistaa t a ommod t thersQi- Formed :in the: base and extending inwardly from: awside thereof isa recess. 4 having undercut sides i and 6 for forming :a way- 1 to adjustabiy mnnntxa centeringpin-supporting post 8.: The

1 lower enjd of the post which" .islocated. in the groovehas shoulder edges-9 and I10 forming ahead 1:] therebetween which is; closely engaged in the way -'|'to carryathe-centering pinto and. from contact with-the workpiece;.as later described; The t-:3 hasia vertically arranged siot-likev recess L2 inthesiorwardifacezl 3 thereof :and which -ex-, tends, fromnear the iowerjendoi thepost through the-upper endrthereofias shown in Figs. 2' and ;6. Thebaclepof the recess-"has, :a through :slot 14 substemti'allycoextensive therewith to pass the threaded shank; l5 of. fa clamping :screw, 16 to anchor acenteringcpin xi! inganadjusted position vertical-1y of: the post. The. clamping screw preferably-has a knurled headil 8 carrying an an 'nularrfiange 19 for engaging the reariace of the postto draw'thecentering pin into fixed position thereim Theqcenteringipimfl is best shown: in Eig. 4t 1 and includes a' substantially diskr-like flange1;2-.i1 haying;a shanks :21 projecting therefrom and proyidedywithfiat sides 22' spaced to conform with. theswidthgof the-recess [2. The centering pin alsois rounded outwardly from the front ofthe diskxportion 20 asindicated at 23 and terminates in; aqpoint 24.; If desired; gauge pins of dif ferent. idia-meter andiength. may be provided to suit the type-of work with'which the gauge is to be usedr, Therearendof the shank 20 has an internally threaded: Ibore 25 in which the shank of. the: clamping screw-is turned when it is desired toiretain'the' centering pin ina vertically adjusted position on the post for projecting" the pin into a bore opening of the workpiece or aligning the pointit-hereofwith a starting point on the workpiece from which other points or lines areto be spaced; Located on the respective sides of thebase ofthe gauge-andextending upwardly therefrom are earszt' and 2Tengaging between spaced ears'28; '29=and"30 -3 fof bar'supports 32 and33; 'lhe supportsfizand 33h'ave's1'0ts 34 formedim tenmediatethe ears thereof so tha't when a pivot Pin-Hand theishank w of'an adjusting screw 3T- are insertedLin; transverse openings of the ears,

the-s-ears of" thesupports are frictionally engaged-1 with' the ears of the base; The supports are thus hingedzifor' arcuate movementrel'ativeto theface Krofithieebase about the axis of thepivotal connections :tojcarry atra'nsversebar 38 toward and away fromzthe face 3' of thebase. The-shank oi. theciampingscrew .preferablyextends loosely through: theaean 3 l onthe support' 33'- and-through a registering opening of the ear 2! on the base into a threaded registering opening in the ear as shown in Fig. 2 so that when the flanged portion of a knurled head 39 of the adjusting screw is turned the ears are clamped together to retain a fixed relationship between the supports and the base of the gauge. The pin may have the ends thereof riveted to exert sufficient friction between the ears to cooperate with the clamping screw in maintaining rigid alignment of the cross bar 38 after an adjustment.

In order to indicate the angular adjustment of pointer 43 projecting laterally of the axis of the:

pivotal connection and which operates over a protractor scale 4! that is fixed to the base inthe barrels are rotated the inner terminal ends 14 are moved along the graduations. The micrometer barrels have axial stems l5 and 16 projecting outwardly from the outer ends thereof and which stems carry collars 11 and 18 fixed thereto and engage between pairs of ears '|980 and 8l-82 projecting from the slide bars. The outer ends of the stems have knurled knobs 83 and 84 so that the stems may be readily rotated to turn the barrels on the fixed graduated rod. It is thus obvious that the slide bars may be moved outwardly relative to the centering pin 11 the bar 38, the support 33 preferably carriesa to fractions of the units of measure to which 7 the blades may be set. The micrometer barrels cooperative relation of the pointer; The supports 32 and 33 are of a height to carry the cross bar carrying bars 46 and 41. The bars and 4? are moved laterally along the cross bar from a position where the inner ends 48 and 49 thereof abut in a plane in direct alignment with the axis of the centering pin l1 outwardly to carry the straight edges or blades 50 and 51 into registry with the point to be measured laterally of the center gauge. The front faces 52 of the slidable bars are each provided with a series of transverse recesses 53 with the corresponding side edges 54 thereof spaced apart in accordance with a unit of measure; for example, inches, whereby s raight edges 55 of the blades are retained'in abutting contact with the side edges 54 of any one of the recesses 53 in which the blade is desired to be inserted. The opposite edges of the blades are slightly beveled as indicated at 53 in Fig. 8 to be overlapped by a clamping member 51 having a similar inclined beveled edge 58 to urge the straight edge of the blade in firm contact with the recess in which it is to be mounted. The clamping member is retained in position by a clamping screw 6! having a threaded shank 52 projecting through an opening 63 in the clamping'member and into a threaded socket 64 formed in the bottom of each recess. The opposite ends of the screws have winged heads 35 adapted to be drawn against the clamping members.

- The lower ends of the blades are suitably shaped as indicated at 66 (Fig. 2) and are movable to and from the face 3 of the base upon loosening of the clamping screw BI and sliding the blades 50 and 5| in the recesses after which they may be re-tightened so that they are retained in adjusted position.

- In'order to move the straight edges to fractions less than the unit measures into which the carrying bars are divided, the cross bar carries a bracket 61 which projects above .and over the adjacent ends of the slide-bars to mount a rod53, therod being securely anchored inthe bracket so that it is fixed against any movement. The ends of the bar 68 project laterally parallel with the slide bars and the terminals thereof havethreads 53 (Fig. 2) conforming in pitch to fractions of the unit measure as indicated bythe graduations 10 on the rod as best shown in Fig.

7 2. Sleeved over the graduated portions of the rod are micrometer barrelsll and i2 having 00- axially threaded sockets 13 (Fig. 2) engaged with threaded terminals 69 of the rod so that when the selected recesses 53.

have graduations on the forward ends thereof corresponding to fractions intermediate the fractions designated by the graduations 10.

In using the device constructed and assembled as described, the workplace is located on the face 3 of the base 2 in alignment with the centering pin IT. The post carrying the centering pin is moved on the base to bring the point 24 of the pin into registry with the starting point or cent'er line that has been scribed on the workpiece.

In case of a center opening in the workpiece, a centering pin of corresponding size is applied to the supporting post [3 and the pin caused to enter the opening of the workpiece to retain position of the workpiece relative to the center plane passing through the axis of the pin and abutting ends of the slide bars when the micrometer barrels are in zero position.

Assuming that the unit of measure is in inches and that a point is to be made on the workpiece, a certain number of inches and fractions of inches at one side of the center plane and other point at the opposite side, the straight edges are moved to the nearest inch position on the respective slide bars and secured with the edges 55 thereof in engagement with the side edges 54 of the recesses 53 by means of the clamping plates 57, the shank 62 of the clamping screws 6| having been turned into the threaded recesses 34 of The micrometer barrels are then adjusted to obtain the desired fraction of inches whereupon the straight edges 55 are in exact registry with the points to be located on the workpiece. In making this adjustment the knurled knobs 83 and 84 of the micrometer shafts l5 and 76 are turned until the desired graduations 85 and 10 are noted exactly in the same'manner as a standard micrometer. Rotation of the barrels causes the barrels to move outwardly by reason of their threaded connection with the rod 68 and since the collars TI and 18 are anchored between the pairs of ears 19-83 and 81-82, the slide bars 45 and 41 are moved outwardly on the track of the cross bar 38.

When the device is to be used in locating or measuring points on inclined planes, the cross bar 33 and the supporting arms 32 and 33'thereof are hinged on the ears 26 and 27 by loosening the clamping screw 35 and swinging the assembly to the desired degree as indicated by-the position of the pointer .40 relative 'to the pr-otractor scale 41. The clamping screw -is then-tightenedto retain the assembly in the desired angular relationship.

It is obvious that the straight edge blades may be moved vertically within their recesses so as to locate the ends thereof relative to the face 3 of the base. It is also obvious that the straight edges may be used as guides for applying scribe lines to a workpiece in the layout thereof.

From the foregoing it is obvious that I have provided a gauge for facilitating accurate layout or measure of locations, point, or lines relative to a starting point on a workpiece.

What I claim and desire to secure by Letters Patent is:

1. A gauge of the character described including a workpiece support, a centering pin, means mounting the centering pin on the support for lateral and vertical movement with respect to the support, a transverse bar having a guide track, arms supporting the bar above the support, slides mounted on the guide track, blades adapted to be adjustably positioned on said slides, means for detachably retaining the blades on said slides, and micrometer means for positioning said slides on the guide track in predetermined positions laterally of said centering pin.

2. A gauge of the character described including a workpiece support, a centering pin, means mounting the centering pin on the support for lateral and vertical movement with respect to the support, a transverse bar having a guide track extending longitudinally of said bar, arms supporting the bar above the support, slides mounted on the guide track and having seats spaced laterally along thelength of the slides in accordance with a standard unit of measure, blades adapted to be positioned in said seats, clamping means for detachably retaining the blades in said seats, and micrometer means for positioning said slides on the track in predetermined positions laterally of said centering pin.

3. A gauge of the character described including a workpiece support, workpiece locating means on the support, a transverse bar having a guide track thereon extending longitudinally of said bar, arms supporting the bar above the support, slides mounted on the guide track and having seats spaced laterally along the length of the slides in accordance with a standard unit of measure, blades adapted to be positioned in said seats, clamping means for detachably retaining the blades in seats, a threaded rod on the support having fractional graduations of said unit of measure, micrometer barrels having threaded connection with said rod, shafts carrying said barrels, means rotatably fixing the shafts to said slides, and means for rotating the shafts.

4. A gauge of the character described including a workpiece support, a centering pin, means mounting the centering pin on the support for lateral and vertical movement with respect to the support, a transverse bar having a guide track thereon extending longitudinally of said bar, arms supporting the bar above the support, slides mounted on the guide track and having seats spaced laterally along the length of the slides in accordance with a standard unit of measure, blades adapted to be positioned in said seats, clamping means for detachably retaining the blades in said seats, a threaded rod in the supfile of this patent:

UNITED STATES PATENTS Number Name Date 2,057,516 Favre Oct. 16, 1936 2,205,979 Horechney June 25, 1940 FOREIGN PATENTS Number Country Date 194,508- Great Britain Mar. 15, 1923 457,372 Germany Mar. 14, 1928 port having fractional graduations of said unit of measure, micrometer barrels having threaded connections with said rod, shafts carrying said barrels, means rotatably fixing the shafts to said slides, and means for rotating the shafts.

5. A gauge of the character described including a workpiece support, workpiece locating means on the support, a transverse bar having a guide track thereon extending longitudinally of said bar, arms pivotally supporting the bar above the support, slides mounted on the guide track and having seats spaced laterally along the length of the slides in accordance with a standard unit of measure, blades adapted to be positioned in said seats, clamping means for detachably retaining the blades in said seats, a threaded rod on the support having fractional graduations of said unit of measure, micrometer barrels having threaded connection with said rod, shafts carrying said barrels, means rotatably fixing the shafts to said slides, means for rotating the shafts, and means for retaining said arms in selected pivoted positions on the support.

6. A gauge of the character described including a workpiece support, workpiece locating means on the support, a transverse bar having a guide track thereon extending longitudinally of said bar, arms pivotally supporting the bar above the support, slides mounted on the guide track and having seats spaced laterally along the length of the slides in accordance with a standard unit of measure, blades adapted to be positioned in said seats, clamping means for detachably retaining the blades in said seats, a threaded rod on the support having fractional graduations of said unit of measure, micrometer barrels having threaded connection with said rod, shafts carrying said barrels, means rotatably fixing the shafts to said slides, means for rotating the shafts, means for retaining said arms in selected pivoted positions on the support, a protractor on the workpiece support, and a pointer on one of the arms for cooperating with the protractor for indicating angular positions of the blades relatively to the workpiece support.

EBEN L. SCOTT.

REFERENCES CITED The following references are of record in the 

